在某些情形里，广义相对论和量子力学集中于一点。

In some cases, both general relativity and quantum mechanics converge.

youdao

在步行期间，你能多次重复：在将你的思绪关注在五个集中点上面、集中于一点再轮换到下一点，再在思绪真空期结束这个周期。

You can repeat the cycle several times during your walk, taking your mind through the five point of focus again, and finishing the cycle with open awareness.

youdao

这些线集中于某一点。

These lines converge at a certain point.

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